Insulator link



Feb. l0. 1925;

R. H. MARVIN INSULATOR LINK Filed April 13 I0 littings 5, While the top insulator unit is conand an exterior which is not only smooth Patented F eb. 10, 1925.

RICHARD II. MARVIN, or EAST LIVERPOOL, soNs COMPANY, or nasi* LIVERPOOL,

OHIO, ASSIGNOR TO THE R. THOMAS & OHIO, A CORPORATION OF OHIO.

INSULATOR LINK.

Application filed April 13, 1921. Serial No. 460,936.

To all whom t may conce/m Be it known that I, RICHARD I-I. a citizen 0I' the United States of residing at East Liverpool, in the Columbiana and State oi Ohio, have invented certain new and useful Improven'ients in Insulator Links, ot which the following is a specilication.

My invention relates to insulator links, and particularly to links for connecting suspension insulator units either to adjacent units, or to end fittings. The object of my invention is to provide a link Which combines great tensile strength with pliability,

MARVIN, America, county of but also relatively soft, so that it Will follow the irregularities in the porcelain of the insulator with which it is used.

In the accompanying draWing Fig. l is a. side elevation of a suspension insulator with which links embodying my invention are associated; and

Fig. 2 is a broken side elevation ot' a detached link, drawn to a larger scale.

A type of suspension insulator with which a link ot' the present construction may be used is shown in Fig. l, in which tivo Hewlett insulator units 3 are connected together by a pair ot' links 4- and their intermediate nected by another link to the suspension fitting 6. Links ot insulators of this type have heretofore comprised either copper rods bent to shape and headed, or cables used With appro-priate fittings.

The present invention is conlined to an improved construction of link. Briefly described, it comprises, as here shown, a flexible center or core 7 of metal strands, preferably o'f high tensile strength, the core being encased in a smooth tubular cover or sheath 8 of sott metal, such as copper, and provided with a head 9 cast or Welded to the body of the link.

There are various Ways in Which the structure may be manufactured. Thus, the core 7 may be of stranded copper Wire or of some stronger or cheaper metal, such for example as brass, steel or suitable alloy, which, While adording a core of great tensile strength, is at the same time of greater flexibility than the copper rods now generally used.

The core may be pulled into a tight fitting tube or sheath 8, or the tube may be initially of greater internal diameter than the core upon which it is then sWaged down. the tubular cover may be formed by bending a strip or strips around the core and Welding, soldering or fusing thc edges of the strips together to form the enclosing sheath. In any case, the sheath or cover is 'of relatively the irregularities of the porcelain and thus distribute evenly strains imposed thereon. terior prevents ice accumulations from becoming locked to the link. Obviously the cover is of relatively slight tensile strength, the latter being allorded by the core ele ment 7.

The head ot the link may be formed in various Ways. It the core and cover are of copper, the head my be formed by Welding solid bar metal to the end ot the link land then upsetting the solid bar metal, producing an appearance substantially like that shown in Fig. 2. Alternatively, the ends of the core and cover may be tinned and flared as shown, and the met-al of the head 9 may then be cast around these flared ends.

Various modifications of the construction will occur lem, While objects of My flexible core element which affords the tensile strength of the link, a metal, smooth cover or a head formed at the afford an anchoring device by Which the link may 'be connected to an intermediate or end fitting for the insulator.

I claim* l. An insulator link comprising a stranded core, heads at opposite ends of the core and a tubular sheath cncasing the core and embedded in the heads at opposite ends of the link.

2. An insulator link comprising a stranded core, heads at opposite ends of the core and a sott metal tubular sheath core and embedded in the heads at opposite ends of the link.

3. An insulator link comprising a stranded core, heads at opposite ends of the core and a soft metal tubular sheath ot' smooth exterior eneasing the core and embedded in the heads at opposite ends of the link.

'-l. An insulator link comprising a flexible core member of Again,

sott metal so that it may lit itself to through the insulator the The smooth exto those dealing with the probstill accomplishing the ends and What I claim as my invention. underlying thought is to provide a relatively sott sheath therefor', and ends ot the link to encasing the great tensile strength and relatively hard, rough exterior, heads of materially greater diameter'at its opposite ends and rigid therewith, in combination with a soft metal vsheath encasing said core at all points between said heads and secured in position thereby, said sheath affording a smooth, relatively soft easing for the body of the link.

5. An insulator link, comprising a flexible l0 core, a smooth soft metal sheath therefor,

and a head in which the end of said core and sheath are embedded.

6. An insulator link, comprising a flexible Core, a smooth `soft metal sheath therefor, and a. head in Which the end of said core and sheath are flared and embedded.

In testimony whereof I have signed my l name to this specification.

RICHARD H. MARVIN. 

